This page explains how Yong Ren (USATT# 16465)'s rating went from 2390 to 2399 at the 2009 Millcreek Giant RR held on - 5 Apr 2009. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.